V1.6 CPU Upgrade VCORE Settings

[ComputerBooter]

Thanks to @zzattack and his help I have been able to more successfully complete CPU Upgrades (2/2) with his technique so far!  Will be getting some units up for sale as soon as I can figure out the proper cooling technique!

The VCORE Voltage Modifications necessary for 1.45volts on a v1.6 xbox is as follows (using 0ohm resistors)

 

 

Edited May 4, 2023 by ComputerBooter

[dust08]

Oh interesting. So you are going to be doing cpu upgraded 1.6 Xboxes? 

[ComputerBooter]

Yessir, once I can get sufficient cooling it’s game on!

[Donnie-Burger]

15 hours ago, ComputerBooter said:

Thanks to @zzattack and his help I have been able to more successfully complete CPU Upgrades (2/2) with his technique so far!  Will be getting some units up for sale as soon as I can figure out the proper cooling technique!

The VCORE Voltage Modifications necessary for 1.45volts on a v1.6 xbox is as follows (using 0ohm resistors)

 

 

Very nice!

[sweetdarkdestiny]

And no. 3 is here ( ~ Skip first 6 hours) : 

 

 

[ComputerBooter]

I was actually wrong, and was measuring Vcore at the wrong location, the original settings I provided are actually 1.55v which wont kill the tualatin, but is .1v higher than it should be running.  Although some CPU's will run better at a lower vcore, some might run better at a higher vcore, either way it is better to be lower than higher.  Here is the CORRECT setting for cpu Vcore for 1.45v.   All that is necessary is to move the original R2E7 0ohm resister and place it on the R2E5 position to attain 1.45v vcore which should be measured at the two resistors south of that (R2E10 + R2E8)

[Bowlsnapper]

This is my 2nd favorite thread... Right behind ZZ attack's, of course.

[ComputerBooter]

So we are still working on the CORRECT Vcore settings, apparently they are wrong for all models.  This thread might need to be deleted so there isn't bad info out.  Cant seem to edit my original post anymore?

[sweetdarkdestiny]

3 hours ago, ComputerBooter said:

Cant seem to edit my original post anymore?

Drop KaosEngineer a PM and ask him if he would be so nice to change it. 

[Bowlsnapper]

7 hours ago, ComputerBooter said:

So we are still working on the CORRECT Vcore settings, apparently they are wrong for all models.  This thread might need to be deleted so there isn't bad info out.  Cant seem to edit my original post anymore?

They are wrong?

[ComputerBooter]

The original picture I posted for the 1.6 xbox does get 1.45 for the vcore but it also grounds some 5v and is not recommended.  The newer method uses 1.5k resistors in a few spots to get around 1.45vcore on the 1.6 xbox's.  The instructions found for the 1.0-1.4 xboxs actually give a bit higher vcore, I believe 1.5 which isn't bad but the recommended is 1.45 for tualatin.  I plan on documenting all voltages in case someone wants to test at a lower or higher vcore for stability.

[Bowlsnapper]

2 hours ago, ComputerBooter said:

The original picture I posted for the 1.6 xbox does get 1.45 for the vcore but it also grounds some 5v and is not recommended.  The newer method uses 1.5k resistors in a few spots to get around 1.45vcore on the 1.6 xbox's.  The instructions found for the 1.0-1.4 xboxs actually give a bit higher vcore, I believe 1.5 which isn't bad but the recommended is 1.45 for tualatin.  I plan on documenting all voltages in case someone wants to test at a lower or higher vcore for stability.

Please do. I'm sure people could take advantage of the higher vcore levels in order to push their overclocks higher.

[sweetdarkdestiny]

55 minutes ago, Bowlsnapper said:

I'm sure people could take advantage of the higher vcore levels in order to push their overclocks higher.

And then add 8 new K4D263238F-QC40 or K4D263238F-UC40 ram chips for better ram OC to push the XBox to it's limits. 

[Slavik916]

Hello booter. No foto

On 06.06.2023 at 10:21, ComputerBooter said:

На самом деле я ошибался и измерял напряжение в неправильном месте. Исходные настройки, которые я предоставил, на самом деле составляют 1,55 В, что не убивает туалатин, но на 0,1 В выше, чем он должен работать. Хотя некоторые процессоры будут работать лучше при более низком напряжении, некоторые могут работать лучше при более высоком напряжении, в любом случае лучше быть ниже, чем выше. Вот ПРАВИЛЬНАЯ настройка напряжения процессора для напряжения 1,45 В. Все, что необходимо, это переместить исходный резистор R2E7 сопротивлением 0 Ом и поместить его в положение R2E5, чтобы получить напряжение 1,45 В, которое следует измерить на двух резисторах к югу от него (R2E10 + R2E8).

 

[Bowlsnapper]

7 hours ago, Slavik916 said:

Hello booter. No foto

 

If I saw ComputerBooter, I would ask for a photo with him.

[eeksdee]

Pretty sure you just need to remove the resistor at R2E7 and jump R2E5 to set 1.45V. The VID pins are internally pulled up so leaving them floating is a logic high. Untested.

Edited September 16, 2023 by eeksdee

[Bowlsnapper]

I got a 1.45V in the mail! 

Next one is 1.5V

 

[ComputerBooter]

Proper Voltage modifications sussed out by Ace and a few others:

https://github.com/ACE-AU/OGX-PIII-CPU-VCORE-SETTINGS